Test running on Basel's newest tram extension is to begin next week. What makes this line remarkable is that of the extension's 2.5km, 1.6 are in Germany (Weil). Rather than being a simple extension of the existing system, the German section is built to German standards. This also effects signage and signaling, for which drivers will receive a special training. To help implement this, BVB is using the services of Thomas Ruff, formerly of Freiburg's VAG.

Another novelty caused by the border crossing will be the presence of customs inspectors going through the tram. Despite its various protestations at not having money for the tram, Weil has a large number of well frequented shops and attracts numerous Swiss shoppers (especially on Saturdays), as the long tailbacks at road customs posts show. Many motorists will hopefully switch to the tram, meaning customs and excise officials will need to stay on their toes to accomodate that.